关于字符串连接操作符（三）(源自IBM蓝色之路一道笔试题目)
再看下下面的例子public class TestChar1 {
public static void main(String[] args) {
// int类型的常量可以赋值给任意类型的变量
byte b = (int) 1; //OK
short s = (int) 1;//OK
int i = (int) 1; //OK
long l = (int) 1; //OK
float f = (int) 1;//OK
double d = (int) 1; //OK
char c = (int) 1; //OK
}
}
public class TestChar2 {
public static void main(String[] args) {
// int类型的变量只能赋值给高类型的变量，不能赋值给低类型的变量（会损失精度）
int a = 1;
char c = (int) a;
// Type mismatch: cannot convert from int to char
byte b = (int) a;
// Type mismatch: cannot convert from int to char
short s = (int) a;
// Type mismatch: cannot convert from int to char
int i = (int) a; //OK
long l = (int) a;//OK
float f = (int) a; //OK
double d = (int) a;//OK
}
}
public class TestChar3 {
public static void main(String [] args) {
int i = 1;
// Type mismatch: cannot convert from int to char
char c = i;
System.out.println(c);
}
}
public class TestChar4 {
public static void main(String [] args) {
char c = (int)1; //Ok, 等价于： char c='\001';
char d = '\001'; //OK
System.out.println(c==d); //output: true }
}
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